Reverting to a previous app version? Nexus 7 2013

I made a mistake and updated to the newest DJI go app. It is NOT compatible with Nexus7 2013. Is there any way to get back to the previous version? The mistake happened on my un-rooted tablet which is solely used for flying my DJI drone.

I also have the correct version on another N7 but that one is rooted....

Thanks for any help or links to someone or shop that could fix the mess I have created.

Glenn

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